Compression-locking grease-cup.



0. E. RISSER & P. E. MoSWBENEY.

COMPRESSION LOOKING GREASE 0UP. APPLICATION FILED 0013.18, 1910.

1 ,033,828. Patented July 30,1912.

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COMPRESSION-LOCKING gREAsn-c'ur.

Specification of Letters Patent.

7 Application filed October 18, 1910. Serial No. 587,731.

To all whom it may concern:

Be it known that W6,'OMER E. RIssER and PETER E. MCSWEENEY, citizens of the United States, residing'afi Springfield, in the county of Greene and State of Missouri, have invented certain new and useful Improvements in Compression Locking Grease-Cups, of which the following is a specification.

This invention relates to lubricators of the type, which employs a casing for holding a suitable lubricant and a plunger mounted within this casin to move longitudinally of the same for orcing the lubricant out of said casing. I

An important object of this invention is to profi'de a lubricator of the above charwhich is characterized by simplicity acter 7 and hence will be cheap to of structure, manufacture.

A further object of this invention is to provide means for locking the plunger against accidental displacement, yet permit of the rotation of the same by the employment of a proper tool.

The lubricator may be employed in connection with locomotives, automobiles, traction engines, and in fact, with any hearing which should be lubricated.

Other objects and advantages of this invention will be apparentduring the course of the following description.

. In the accompanying drawings forming a part of this specification, and in which like numerals are employed to designate like parts throughout the same, Figure 1 is a central vertical section through the lubricator,

.Fig. 2is a plan view of the same, Fig. 3 is a horizontal section taken on line 33 of Fig. 1, and looking downwardly as shown by the arrow, and Fig. 4: is a view similar to Fig. 1, showing a modified form of plunger,

' with part of the lubricator broken away.

In the drawings wherein is illustrated a preferred embodiment of the invention, the numeral 1 designates a cylindrical casing having the lower end thereof provided with a head 2, as shown. This head has formed thereon at its center, a boss 3, which is provided with an axial opening 4 extending through the head 2 for communication with the interior of the casing 1-. The boss 3 may preferably be externally screw threaded, as shown at 5, for engagement with suitable means (not shown) for connecting the lubricator with the bearing to be supplied with a lubricant. The bore of extends through-the upper end thereof, as shown, and the upper portion of this casing is internally screw threaded as shown at 6, for a purpose to be explained.

Patented July so, 1912.

the casing 1 As clearly illustrated in Fig. 1, a. cylindrical externally screw threaded feed-plunger 7 is disposed within threaded portion of the casing 1. This feedplunger is provided upon its outer end with a reduced extension 8, formed square in cross section for engagement with an ordinary wrench. From. the construction of the above referred to parts,

the upper screwwhich is preferably 1 it is obvious that the feed-plunger may be readily removed from engagement with the casing 1, so that this casing may be filled with a lubricant, and then inserted within the screw threaded end ofthe casing and rotated to feed the lubricant from said casing.

The feed-plunger 7 is provided upon its periphery with a groove 9,. which extends longitudinally of the feed-plunger, as shown. The upper open end of the casing 1 may preferably be provided with an annular flange 10, having an annular groove 11 formed upon the periphery of the same, as shown. The upper end of the casing 1 is further provided with a radially disposed opening 12, which leads into the annular groove 11. Movably mounted within the opening 12, is a locking inner end thereof tapered, as shown. This tapered end is disposed within the groove 9. The locking pin 13 carries upon its outer end, a head 14, which is disposed within the annular groove 11. The annular groove 11 removably holds an annular spring 15, having overlapping ends 16, which engage the head of the locking pin 13 for yieldingly holding the inner end of the same within the groove 9. I

From the construction of the above referred to parts, it is obvious that the locking pin 13 by virtue of its location within the groove 9, will hold the feed-plunger 7 against accidental rotation, and move out.- wardly against the pressure of the spring 15 to permit of the rotation of :tlld feed-plunger, when a suitable tool, such as a wrench, is employed to rotate the same. \Vhen the feed-plunger 7 is rotated so that its groove 9 returns to a position for registration with pin 13, having the posed within said groove and the accidental.

.the fact that on account of the 3 ring 15 being readily removable, the loc ng pin 13 may also be removed when the same becomes broken or worn.

' The form of the invention as illustrated in Fig. 4, is exactly like the first form, except that a modified form of feed-plunger 17 is provided. This feed-plunger 17 has its upper portion provided with a recess 18, which 1s preferably square in cross-section, for receivin the prong of a suitable wrench. The feed-plunger 17 1s externally screw threaded as shown at 20, and may be readily employ'ed in place of the feed-plunger 7.

It is thought that the operation of the. lubricator, in view of the above description and explanation, is obvious and therefore need not be recited.

It is to be understood that the form of the invention herewith shown and described is to be taken as a preferred example ofthe same, and that certain changes in the size, shape and arrangement of parts may be 'resorted to without departing from the spirit of the invention or the scope of the subjoined claim.

copies of this patent may be obtained for A'grease cup comprising, in combination,

a casing open at one end and internally screw-threaded, an externally screw-threaded plug to operate in the casing and pro"- vided within a longitudinally extending. groove, said casing beingprovided at its.

open end with an annular groove having a radially extending opening which leads into the axial opening of said casin a separate pin disposed within the radial y extendingopenin and having its inner end ta ered to enter t e longitudinal groove of said plug, to hold the same against accidental rotation and to allow said plug to be turned in both directions when desired, and an annular split spring disposed within the annular groove and having its free ends overlapping and placed in engagement with said sep-' arate pin.

In testimony whereof we afiix our signatures in presence of two witnesses.

OMER E. RISSER. PETER E. MCSWEENEY. Witnesses:

R. M. MURPHY, J. W. OwENs.

five cents each, by addressing the "Commissioner of Patents. Washington,- D. 0. 

